Method of connecting two pieces of metal or like material



I W. A. ZEIDLER. METHOD OF CONNECTING TWO PIECES OF METAL 0R LIKE MATERIAL. APPLICATION FILED 'APR.24,131& RENEWED APR.19,1919- x 7 I W04 principles under my process a. or new YGR-K, N. r.

m [1.3; come-m3 lffvinnniaz .E'i. Zernnnn, nitod States, residing at he county of Bronx: and fork, have invented certain ui Y W Two Pieces of Meta or like ring is a speciiication.

This n J curely connecting together two pieces metal or the like material, without weldingor riveting or other devices or expedients, and to articics made in accordance with, such process.

. The-objects and aims of the invention, together with the advantages inherent, wlll be in part obvious and in part specifically the course or the iollowing description of the elements, comhinations arrangements of parts, and applications or constituting the invention; and protection contemplated Wlll in tlie claims;

companyinp drawings, which are '1 as art oi this specification, which 1 iave shown a merely preed form of embodiment of the inventhe scope ure 1 a collective view in plan and view showing one of the connected the first stage of its manipulation Fig. 2 is a similar View showing the succeeding step; Fig. 3 is a similar view showing the last step with the ch er connected pieces in sccured'lposition; i is plan view of two; pieces connected in accordance with my invention, and intended for use in connection with a shell shown in '1' Fi 5 is an edge View ol' the subject-matter of Fig. 6:; Fig. 6 is a view partly in section and partly inedize view oi? the safety device for a shell ime. in connection with which pieces at invention finds use; and Fig. i is a nartiy "ration and partly n s. illu iow the device or 11.

tive position improvements in Methods.

'tion relates to method-for ses'liQNEEClING TVIG PIECES Q1 METAL OR LIKE MATERIAL.

Patenteddan. 18, 321.

a n leis, Serial 230,543. Renewed A ril 19, 1919. Serial No. 291,445.

fuse and shoulder or washer 11. So long as this spiral is 1n posit on around the detonating pin it acts as a safety, to prevent when thereafter the nose 10 strikes a solid object it will be driven inwardly, after shearing off the relatively soft shearing pin 12. All of this is familiar construction. The actual spacing of the nose l0 and washer 11 is accomplished bymeans of spacer elements 1 1 shown in Fig. 6. One of these spacer elements 1 has a lug 15 which extends through an appropriate opening in the wall of the strip 8 and engages in a groove'16 of the firing pin, and the outer end of the strip must be made heavier so that centrifugal force may come into play. For the purpose of weighting the outer end of the spiral various expedients have been pro posed. llOr instance, a hcavypiece of metal has been riveted to'thev outer end of the stripS, but this has the objection that the riveted end sometimes comes off before the spiral is completely stripped. It has also been proposed to weld a heavy piece of metal atthe outer end of the, strip 8 and this is also unsatisfactory for obvious reasons. According to my invention the weight which is to go vupon the outer end of the strip 8 is in thd form of a rectangular piece of metal, which is provided with comparatively wide parallel grooves 17 T hese grooves are formed by an ordinary machining operation or the like, upon the fiat piece shown in Fig. 1, and thereafter, as shown in Fig. 2, the sides of ,the piece beginning with the inner limit of each groove 17 are bent up at right angles or nearly so. The outer end of the strip 8, which is proferablv somewhat wider than the surface 18 between the grooves 17, is now introducedbetween the upstanding sides-19 of the weight-piece, with its edges in the under-cuts provided by the adj cent portions of the grooves 17, and therel pen the sides 19 are forced down toward each other to the positionshown in 3. This causes '18 end of the strip 8 to assume a tran seiy bowed condition, with the edges of the strip ext-ending upwardly into the 5'; aces provided by the grooves 17, and the median portion of the strip bowed away from the floor 18. The frictional grip thus obtained between the weighted end piece and the strip 8 is enormous and the con nection has stood up under the most rigid.

of official tests. Aside from the security of the connection there are obvious advantages favoring rapid quantity production.

suitable lengths, and the subsequent bend- 1 ing up of the weight-piece and the bending of it' around the end of the strip 8, may all be readily done by means of automatic mechanism anddies. After the parts have been connected as shown in Figs. 3, 4, 5, the union between the connected parts is still further strengthened by the longitudinal bending of the end of thespiral, including the end of the strip 8 and the weight member which grips the end of the strip 8, as indicated at 20 in Fig. 6. When the spiral is in position around the firing.

pin, and up to the time when the projectile is to be placed in'the gun, the spiral is held integral by means of a bit of wire 21 tied around it and with its ends coiled .as at 22, Fig. 6, this. wire being out before the shell is inserted in thegum The spacer elements --14 fit in seats Qifformed in the strip 8, and the strip is coiled around themas shown in Fig. 6 so that when the weighted end 20 flies out under centrifugal force and the stripis thrown ofi, it carries thespacer elements 14 with it.

It has been stated that the end of the strip 8is wider than the bottom wall 18 of the weight member between the grooves 17 It'should be added that the side edges of the end of the strip 8- (Fig. fit snugly between the bottom walls of the grooves 17, so that as these bottom walls move toward each other to the Fig. 3 position the buckling of the end of the strip is accomplished as stated. This transverse buckling of course adds to the force of the gri between the two connected parts. Obvious y, instead of first bending up the sides 19 and then inserting the strip between them, the strip may be laid on the flat blank (Fig. 1) and then the bending operations shown in Figs. 2 and 3 proceeded with.

'It will be noted in Fig. 3 that the meeting edges of the inturned sides 19 provide a" groove runnin longitudinally of the connected parts. dhis groove, in the final form of thetdevice, Fig. 6, serves as a convenient seat for the binding wire 21.

Inasmuch as many changes could bcmade in the above construction, and many apnarently widely different embodiments of my -vention could be made without departing from the scope thereof, it is intended that ivention which as, a matter of all matter'containe'd in the above description or shown in the accompanying drawings shall beinterpreted as illustrative and not in a limiting sense.

It is also to be understood that the language used in the following claims is intended to cover all the generic and specific features oi the invention herein described and all statements of the scope of the in- 7 language, might be said to fall therebetween.

1 claim:

1. The method of connecting two pieces of metal, one of them in strip form, which consists in providing the other piece with parallel grooves, bending up the sides of the second piece at right angles, beginning with the innerlimit of the introducing the end of the first piece or strip between said upturned sides, with its surface fiat against the portion of the second piece between the grooves and its edges fitting snugly between the bottom walls of the grooves, and then bonding the sides of the second piece toward each other and down upon the end-of the strip, whereby the end of the strip is bowed and gripped between said sides.

2. The method of connecting two pieces of metal, 'one of them in strip, form, which consists in providing the other piece with parallel grooves, bending up the sides of the second piece at right angles, beginning with the inner limit of the grooves respectively, introducing the end of the first piece or strip between said upturned sides, with its surface fiat against the portion of the second piece between the grooves and its edges fitting snugly between the bottom walls of the grooves, then bending the sides of the second piece toward each other and down upon'the end of the strip, and then bending the two pieces longitudinally.

3. Anarticle of the kind described com prising a weight-piece having a bottom or median portion and two side portions bent- 5. The method of connecting two pieces of metal, one of them in strip form, and the other in a U-shape form, with the arms on, the inner side undercut above their junction with the bottom of the U, inserting the strip between the arms of the U with its grooves respectively,

' edges in the-eut-oiits nhereoflendthen. bend 7 i eee 'iee' -ang1es, introd. ueing theend of the other pieee betwee n 'Saic} upturned sides, behdin g. the sides of seidfirst piece toward each oiher and down upon the other piece and then bending the two connected pieces iongi tiidinaiiy.-

'2'. The method of connecting twoPieees of metal, which consists in bending inward disposed in the trough ofseid-first. stripen-d then bending the comaeeted strips longitudinelhn 8. A11 efli cle-of the kih'd described, comorising e weight piece and a strip, one of said members being of genemily C-shape form, the other memberheving'e portion disposed within the trough of'seigij C-shape memberr and the end portions of said G-sha15ed member, bearingu'pon the interposed portion ofthe other membeiy said con .neoted 'p'erts bein longituciinollyeurved.

I An article 0 the kind-described, oompns ng; a Weight; piece and a striia; one of saidemembere being of geneielly Gehape JFQmi the other member hevmg e portion disposed Within the erou h of said 'fii e'heged member and the Sides of said Q-Shdpflfiiiffhihk be:- being bent toward each other emi down upon the interposed portion of theho ther I member, one of said connected pajrts'hevin on an expoeeel side thGIGOIE E IODgiU Zfli H groove providing a; seat for e'bindmg-wire and ebinding wire seetedin the In testimony. whereof I "efii-x eigng;

sure; 1 i

. WILLIAM A. ZEIDLER." 

